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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/linearstore/journal/EmptyFilePoolPartition.h"
#include <dirent.h>
#include <iomanip>
#include "qpid/linearstore/journal/jdir.h"
#include "qpid/linearstore/journal/jerrno.h"
#include "qpid/linearstore/journal/jexception.h"
#include "qpid/linearstore/journal/slock.h"
//#include <iostream> // DEBUG
namespace qpid {
namespace linearstore {
namespace journal {
// static
const std::string EmptyFilePoolPartition::s_efpTopLevelDir_("efp"); // Sets the top-level efp dir within a partition
EmptyFilePoolPartition::EmptyFilePoolPartition(const efpPartitionNumber_t partitionNum,
const std::string& partitionDir,
JournalLog& journalLogRef) :
partitionNum_(partitionNum),
partitionDir_(partitionDir),
journalLogRef_(journalLogRef)
{
validatePartitionDir();
}
EmptyFilePoolPartition::~EmptyFilePoolPartition() {
slock l(efpMapMutex_);
for (efpMapItr_t i = efpMap_.begin(); i != efpMap_.end(); ++i) {
delete i->second;
}
efpMap_.clear();
}
void
EmptyFilePoolPartition::findEmptyFilePools() {
//std::cout << "Reading " << partitionDir << std::endl; // DEBUG
std::vector<std::string> dirList;
jdir::read_dir(partitionDir_, dirList, true, false, false, false);
bool foundEfpDir = false;
for (std::vector<std::string>::iterator i = dirList.begin(); i != dirList.end(); ++i) {
if (i->compare(s_efpTopLevelDir_) == 0) {
foundEfpDir = true;
break;
}
}
if (foundEfpDir) {
std::string efpDir(partitionDir_ + "/" + s_efpTopLevelDir_);
//std::cout << "Reading " << efpDir << std::endl; // DEBUG
dirList.clear();
jdir::read_dir(efpDir, dirList, true, false, false, true);
for (std::vector<std::string>::iterator i = dirList.begin(); i != dirList.end(); ++i) {
EmptyFilePool* efpp = 0;
try {
efpp = new EmptyFilePool(*i, this, journalLogRef_);
{
slock l(efpMapMutex_);
efpMap_[efpp->dataSize_kib()] = efpp;
}
}
catch (const std::exception& e) {
if (efpp != 0) {
delete efpp;
efpp = 0;
}
//std::cerr << "WARNING: " << e.what() << std::endl;
}
if (efpp != 0)
efpp->initialize();
}
}
}
EmptyFilePool* EmptyFilePoolPartition::getEmptyFilePool(const efpDataSize_kib_t efpDataSize_kib) {
efpMapItr_t i = efpMap_.find(efpDataSize_kib);
if (i == efpMap_.end())
return 0;
return i->second;
}
void EmptyFilePoolPartition::getEmptyFilePools(std::vector<EmptyFilePool*>& efpList) {
for (efpMapItr_t i=efpMap_.begin(); i!=efpMap_.end(); ++i) {
efpList.push_back(i->second);
}
}
void EmptyFilePoolPartition::getEmptyFilePoolSizes_kib(std::vector<efpDataSize_kib_t>& efpDataSizesList_kib) const {
for (efpMapConstItr_t i=efpMap_.begin(); i!=efpMap_.end(); ++i) {
efpDataSizesList_kib.push_back(i->first);
}
}
std::string EmptyFilePoolPartition::getPartitionDirectory() const {
return partitionDir_;
}
efpPartitionNumber_t EmptyFilePoolPartition::getPartitionNumber() const {
return partitionNum_;
}
// static
std::string EmptyFilePoolPartition::getPartionDirectoryName(const efpPartitionNumber_t partitionNumber) {
std::ostringstream oss;
oss << "p" << std::setfill('0') << std::setw(3) << partitionNumber;
return oss.str();
}
//static
efpPartitionNumber_t EmptyFilePoolPartition::getPartitionNumber(const std::string& name) {
if (name.length() == 4 && name[0] == 'p' && ::isdigit(name[1]) && ::isdigit(name[2]) && ::isdigit(name[3])) {
long pn = ::strtol(name.c_str() + 1, 0, 0);
if (pn == 0 && errno) {
return 0;
} else {
return (efpPartitionNumber_t)pn;
}
}
return 0;
}
// --- protected functions ---
void EmptyFilePoolPartition::validatePartitionDir() {
if (!jdir::is_dir(partitionDir_)) {
std::ostringstream ss;
ss << "Invalid partition directory: \'" << partitionDir_ << "\' is not a directory";
throw jexception(jerrno::JERR_EFP_BADPARTITIONDIR, ss.str(), "EmptyFilePoolPartition", "validatePartitionDir");
}
// TODO: other validity checks here
}
}}}
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